Читать книгу Statistics and Probability with Applications for Engineers and Scientists Using MINITAB, R and JMP - Bhisham C. Gupta, Irwin Guttman - Страница 60

Before discussing this plot, we need the concept of the median of a set of data. The median is the value, say , that divides the data into two equal parts when the data are arranged in ascending order. A working definition is the following (a more detailed examination and discussion of the median is given in Section 2.5.1).